<template>
    <div>
         <!--面包屑导航区-->
     <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/roles' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>角色管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
        <!--添加角色区域-->
        <el-row>
            <el-col>
                <el-button type="primary" @click="addDialogVisible=true">添加角色</el-button>
            </el-col>
        </el-row>
      <!--角色列表数据区域-->
      <el-table :data="rolelist" border stripe>
           <!--展开列-->
          <el-table-column type="expand">
              <template slot-scope="scope">
                  <el-row :class="['bdbottom',i1===0 ? 'bdtop' : '','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
                       <!--渲染一级权限-->
                    <el-col :span="5">
                       <el-tag closable @close="removeRightById(scope.row,item1.id)"> {{item1.authName}}</el-tag>
                       <i class="el-icon-caret-right"></i>
                    </el-col>
                    <el-col :span="19">
                         <!--渲染二级权限-->
                        <el-row :class="[i2===0 ? '' : 'bdtop','vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
                            <el-col :span="6">
                                <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                                 <i class="el-icon-caret-right"></i>
                            </el-col>
                            <!--渲染三级权限-->
                            <el-col :span="18">
                                <el-tag type="warning" v-for="(item3,i3) in item2.children" :key="item3.id" 
                                closable @close="removeRightById(scope.row,item3.id)">
                                    {{item3.authName}}
                                </el-tag>
                            </el-col>
                        </el-row>
                    </el-col>
                  </el-row>
                <!-- <pre>
                    {{scope.row}}
                </pre> -->
              </template>
          </el-table-column>
          <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
            <template slot-scope="scope">
          <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)"> 编辑</el-button>
          <el-button size="mini" type="danger" icon="el-icon-delete"@click="removeRoleById(scope.row.id)">删除</el-button>
          <el-button size="mini"type="warning" icon="el-icon-setting"@click="showSetRightDialog(scope.row)">分配权限</el-button>
            </template>
        </el-table-column>
      </el-table>
    </el-card>


     <!--添加角色的对话框-->
    <el-dialog
      title="添加角色"
      :visible.sync="addDialogVisible"
      width="50%" @close="addDialogClosed">
       <!--内容主体区域-->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="80px">
      <el-form-item label="角色名称" prop="roleName">
      <el-input v-model="addForm.roleName"></el-input>
      </el-form-item>
      <el-form-item label="角色描述" prop="roleDesc">
      <el-input v-model="addForm.roleDesc"></el-input>
      </el-form-item>
      </el-form>
        <!--底部区域-->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary"  @click="addRole">确 定</el-button>
      </span>
    </el-dialog>


     <!--修改角色的对话框-->
     <el-dialog
      title="修改角色信息"
      :visible.sync="editDialogVisible"
      width="50%"  @close="editDialogClosed">
       <!--内容主体区域-->
       <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="80px">
      <el-form-item label="角色名称">
      <el-input v-model="editForm.roleName" disabled></el-input>
      </el-form-item>
      <el-form-item label="角色描述" prop="roleDesc">
      <el-input v-model="editForm.roleDesc"></el-input>
      </el-form-item>
      </el-form> 
        <!--底部区域-->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

     
<el-dialog
  title="分配权限"
  :visible.sync="setRightDialogVisible"
  width="50%" @close="setRightDialogClosed">
   <!--树形控件-->
  <el-tree :data="rightslist" :props="treeProps" show-checkbox node-key="id"
  default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>

  <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
</el-dialog>


   </div>
</template>
<script>
export default {
    data(){
        return{
            //所有角色列表数据
            rolelist:[],
           
    //控制添加角色的对话框的显示与隐藏
            addDialogVisible:false,
            //添加角色的表单数据
            addForm:{
                roleName:'',
                roleDesc:''
            },
            //添加表单的验证规则对象
            addFormRules:{
                roleName:[
                 { required: true, message: '请输入角色名称', trigger: 'blur' },
                 {min:2,max:10,message:'用户名的长度在2到10个字符之间',trigger:'blur'}

                ],
                roleDesc:[
                 { required: true, message: '请输入角色描述', trigger: 'blur' },
                 {min:5,max:10,message:'用户名的长度在5到10个字符之间',trigger:'blur'}
                ]
            },
             editDialogVisible:false,
           //查询到的角色信息对象
            editForm:{},
            //修改表单的规则对象
            editFormRules:{
                roleDesc:[
                { required: true, message: '请输入角色描述', trigger: 'blur' },
                 {min:5,max:10,message:'用户名的长度在5到10个字符之间',trigger:'blur'}
                ]
            },
            
            //控制分配权限对话框的显与隐藏
           setRightDialogVisible:false,
            //所有权限的数据
            rightslist:[],
            //树形控件的属性绑定对象
            treeProps:{
            label:'authName',
            children:'children'
            },
            //默认选中的id值数组
            defKeys:[],
            //当前即将分配权限的id
            roleId:''
        };
    },
    created(){
        this.getRolesList()
    },
    methods:{
        //获取所有角色的列表
       async getRolesList(){
     const {data:res}= await this.$http.get('roles')
         if(res.meta.status!==200){
             return this.$message.error('获取角色列表失败')
         }
        this.rolelist=res.data
        console.log(this.rolelist)
        },
        //根据id删除对应的权限
     async  removeRightById(role,rightId){
            //弹框提示用户是否删除
          const confirmResult= await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        if(confirmResult !=='confirm'){
            return this.$message.info('取消了删除')
        }
     const {data:res}= await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
       if(res.meta.status!=200){
           return this.$message.error('删除权限失败')
       }
       role.children=res.data
        },
        //监听添加角色的关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        //点击按钮，添加新角色
        addRole(){
            //登顶添加预校验
             this.$refs.addFormRef.validate(async valid=>{
                if(!valid) return
                //可以发起添加角色的用户请求
              const{data:res}  =await this.$http.post('roles',this.addForm)
               if(res.meta.status!==201){
                   this.$message.error('添加角色失败')
               }
               this.$message.success('添加角色成功')
               //隐藏添加用户的对话框
               this.addDialogVisible=false
              //刷新列表数据
               this.getRolesList()
             })
        },
        //展示编辑角色的对话框
       async showEditDialog(id){
         const {data:res}= await this.$http.get('roles/'+id)
         if(res.meta.status!==200)
             return this.$message.error('查询角色信息失败')
             this.editForm=res.data
             this.editDialogVisible=true
        },
        //监听修改用户对话框的关闭事件
        editDialogClosed(){
           this.$refs.editFormRef.resetFields()
        },
        //修改用户信息并提交
        editRoleInfo(){
           //修改与验证
           this.$refs.editFormRef.validate(async valid=>{
               if(!valid) return
               //可以发起修改角色的请求
         const {data:res}= await this.$http.put('roles/'+this.editForm.roleId,{roleName:this.editForm.roleName,roleDesc:this.editForm.roleDesc})
           if(res.meta.status!==200){
                return this.$message.error('更新角色失败')
            }
            this.editDialogVisible=false
             this.$message.success('更新角色成功');
              this.getRolesList()
          })
           
        },
        //根据id删除对应的角色信息
      async  removeRoleById(id){
         const confirmResult=await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        if(confirmResult!=='confirm'){
         return this.$message.info('已经取消删除')
     }
         const{data:res} =await this.$http.delete('roles/'+id)
       if(res.meta.status!==200){
           return this.$message.error('删除角色失败')
       }
       this.$message.success('删除角色成功')
       //刷新用户列表
        this.getRolesList()
        },
        //展示分配权限的对话框
       async showSetRightDialog(role){
             this.roleId=role.id
            //获取所有的权限数据
           const {data:res}=await this.$http.get('rights/tree')
           if(res.meta.status!==200){
               return this.$message.error('获取权限失败')
           }
           //获取到的权限数据，保存到data中
           this.rightslist=res.data
           console.log(this.rightslist)
          //递归获取3级节点的id
          this.getLeafKeys(role,this.defKeys)

         this.setRightDialogVisible=true
        },
        //通过递归的形势下，获得所有3级权限的id并保存到kefkeys数组中
        getLeafKeys(node,arr){
        if(!node.children){
            return arr.push(node.id)
        }
        node.children.forEach(item=>this.getLeafKeys(item,arr))
        },
        //监听分配权限对话框的关闭事件
        setRightDialogClosed(){
           this.defKeys=[]
        },
        //定义分配权限的函数,点击为角色分配权限
        async allotRights(){
           const keys=[
               ...this.$refs.treeRef.getCheckedKeys(),
                  ...this.$refs.treeRef.getHalfCheckedKeys()
           ]
           const idStr=keys.join(',')
          const{data:res}= await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
          
          if(res.meta.status!==200){
              return this.$message.error('分配权限失败')
          }
          this.$message.success('分配权限成功')
          this.getRolesList()
          this.setRightDialogVisible=false
       }
    }
}
</script>
<style lang="less">
.el-tag{
    margin: 7px;  
}
.bdtop{
    border-top: 1px solid #eee;
}
.bdbottom{
    border-bottom: 1px solid #eee;
}
.vcenter{
    display: flex;
    align-items: center;
}
</style>